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Cheap flights from Ontario to Seoul from $604

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Seoul departing on 10/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Multiple Airlines Logo
3:00 pm - 10:05 pmONT-GMP
38h 05m2 stops
Multiple Airlines Logo
8:00 am - 1:48 pmGMP-ONT
22h 48m2 stops
$2,579Multiple Airlines
Find Deal
jue., ene. 15 - sáb., ene. 31
Japan Airlines Logo
6:00 am - 10:05 pmONT-GMP
24h 05m2 stops
Japan Airlines Logo
12:05 pm - 3:54 pmGMP-ONT
20h 49m2 stops
$2,976Japan Airlines
Find Deal
vie., oct. 31 - sáb., nov. 29
Japan Airlines Logo
6:00 am - 10:05 pmONT-GMP
23h 05m2 stops
Japan Airlines Logo
12:05 pm - 3:42 pmGMP-ONT
20h 37m2 stops
$3,683Japan Airlines
Find Deal
dom., dic. 21 - jue., ene. 1
Multiple Airlines Logo
11:59 pm - 10:05 pmONT-GMP
29h 06m2 stops
Multiple Airlines Logo
8:00 am - 11:53 amGMP-ONT
20h 53m2 stops
$4,009Multiple Airlines
Find Deal
lun., dic. 22 - lun., ene. 5
Multiple Airlines Logo
2:54 pm - 9:50 pmONT-GMP
38h 56m2 stops
Multiple Airlines Logo
7:55 am - 2:01 pmGMP-ONT
22h 06m2 stops
$23,952Multiple Airlines
Find Deal
sáb., oct. 4 - dom., oct. 19
Multiple Airlines Logo
9:36 am - 10:20 pmONT-GMP
20h 44m2 stops
Multiple Airlines Logo
7:45 am - 12:37 pmGMP-ONT
21h 52m2 stops
$28,524Multiple Airlines
Find Deal
jue., oct. 2 - jue., nov. 6

Japan Airlines flights from Ontario to Seoul Gimpo Intl Airport

Our best Japan Airlines deals on Ontario to Seoul Gimpo Intl Airport flight tickets
Japan Airlines
Oct 31
ONT6:00 amOntario
24h 05m
2 stops
GMP10:05 pmSeoul Gimpo Intl
Nov 29
GMP12:05 pmSeoul Gimpo Intl
20h 49m
2 stops
ONT3:54 pmOntario
$2,976
Find similar
Japan Airlines
Dec 21
ONT6:00 amOntario
23h 05m
2 stops
GMP10:05 pmSeoul Gimpo Intl
Jan 1
GMP12:05 pmSeoul Gimpo Intl
20h 37m
2 stops
ONT3:42 pmOntario
$3,683
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Seoul Gimpo Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated septiembre 18, 2025.
Use the filters below to find and compare flights from Ontario to Seoul Gimpo Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

jue. 1/15

3:00 pm-10:05 pm

2 stops38h 05m

Seoul Gimpo Intl

sáb. 1/31

8:00 am-1:48 pm

2 stops22h 48m

$2,579

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

vie. 10/31

6:00 am-10:05 pm

2 stops24h 05m

Seoul Gimpo Intl

sáb. 11/29

12:05 pm-3:54 pm

2 stops20h 49m

$2,976

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

dom. 12/21

6:00 am-10:05 pm

2 stops23h 05m

Seoul Gimpo Intl

jue. 1/1

12:05 pm-3:42 pm

2 stops20h 37m

$3,683

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

lun. 12/22

11:59 pm-10:05 pm

2 stops29h 06m

Seoul Gimpo Intl

lun. 1/5

8:00 am-11:53 am

2 stops20h 53m

$4,009

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

sáb. 10/4

2:54 pm-9:50 pm

2 stops38h 56m

Seoul Gimpo Intl

dom. 10/19

7:55 am-2:01 pm

2 stops22h 06m

$23,952

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

jue. 10/2

9:36 am-10:20 pm

2 stops20h 44m

Seoul Gimpo Intl

jue. 11/6

7:45 am-12:37 pm

2 stops21h 52m

$28,524

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

mar. 10/14

12:10 am-5:05 pm

3 stops48h 55m

$604

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

mié. 10/15

11:10 pm-2:45 pm

3 stops47h 35m

$633

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

dom. 10/19

12:10 am-1:50 pm

2 stops21h 40m

$726

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

dom. 10/19

12:10 am-1:50 pm

2 stops21h 40m

$729

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Seoul from

How to get the cheapest flight ticket from Ontario to Seoul Gimpo Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Seoul Gimpo Intl Airport?

On average, the least expensive day to fly to Seoul Gimpo Intl Airport from Ontario is on a Monday. momondo users have found tickets for Monday departures for as low as $1,277. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Seoul Gimpo Intl Airport is Friday, with ticket prices averaging around $1,749.

What is the cheapest time of day to depart on your flight to Seoul Gimpo Intl Airport?

According to our data, the cheapest time of day to fly to Seoul Gimpo Intl Airport is in the evening. momondo users have found flights departing from Ontario to Seoul Gimpo Intl Airport in the evening for as low as $1,191. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Seoul Gimpo Intl Airport is at noon when prices are around $1,733.

When to book flights from Ontario to Seoul Gimpo Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Seoul Gimpo Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Seoul Gimpo Intl Airport (ONT to GMP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Seoul Gimpo Intl Airport

Direct flights

None
There are no direct flights from Ontario to Seoul Gimpo Intl Airport. There are no popular flight routes from Ontario to Seoul Gimpo Intl Airport.
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  • How far is Ontario to Seoul Gimpo Intl by plane?

    A flight from Ontario to Seoul Gimpo Intl will travel around 5983.3 mi. By plane, this route typically takes 20h 44m.

  • When did momondo last update prices for flights from Ontario Airport to Seoul Gimpo Intl Airport?

    Prices for flights from Ontario Airport to Seoul Gimpo Intl Airport were last updated today.

  • How old do you have to be to fly from Ontario Airport to Seoul Gimpo Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Seoul Gimpo Intl Airport.

  • What documentation or ID do you need to fly to Seoul Gimpo Intl Airport?

    The necessary travel and health documents for your Seoul Gimpo Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Seoul?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Seoul. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Seoul with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seoul from Ontario with this policy.

How can momondo help me find flights from Ontario to Seoul?

momondo helps you find the best flight between Ontario and Seoul by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Ontario to Seoul right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seoul, momondo offers a useful price alert feature which will track prices for flights to Seoul from Ontario and alert you when they change.

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sáb. 10/18
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